p0325
Moderate
Honda · Sedans
Knock Sensor 1 Circuit Malfunction Bank 1
Quick Answer
Error code P0325 on your Honda Sedans means: Knock Sensor 1 Circuit Malfunction Bank 1. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
CV3CV4FC1FC4FE1FL5ZC5Accord EX 2024Accord EX-L 2024Accord Hybrid EX-L 2024Accord Hybrid Sport 2024Accord Hybrid Touring 2024Accord LX 2024Accord Sport 2024Accord Touring 2024Civic EX 2024Civic Hybrid Sport 2025Civic Hybrid Sport Touring 2025Civic LX 2024Civic Si 2024Civic Sport 2024Civic Touring 2024Civic Type R 2024ZE4
Likely Causes
How to Fix It
1
Locate the knock sensor on the engine block (typically below the intake manifold on Honda inline-4 engines)
2
Inspect the knock sensor wiring harness and connector for damage, corrosion, or loose connections
3
Test the knock sensor resistance with a multimeter; compare to Honda specification (typically 500-600 kOhm)
4
Check the knock sensor mounting bolt torque; re-torque to specification if loose
5
Replace the knock sensor if resistance is out of range or wiring is confirmed good
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Knock sensor
Knock sensor wiring harness
Knock sensor mounting bolt
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